Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/gridaco/grida/groundingnpx skills add gridaco/grida --skill groundinggit clone --depth 1 https://github.com/gridaco/gridaWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00123 | $0.00998 |
| Opus 5 | $0.00062 | $0.00499 |
| Sonnet 5 | $0.00025 | $0.00200 |
| Haiku 4.5 | $0.00012 | $0.00100 |
Grade A, and why
grounding scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Grounding
Grounding is establishing what is actually true and current for the surface you are about to change, then acting on that — not on a guess, a memory, or the first grep hit. The hard part is not search; it is picking the authoritative source and reconciling sources that disagree.
Intentional seed. This holds only Grida-specific facts that are not obvious from
CLAUDE.md/AGENTS.md. Grow it from real, discovered specifics (concept→file anchors that bite repeatedly, conflicts that actually happened and how they resolved). Do not pad it with generic search advice a competent agent already knows.
Source of truth (scoped to the surface)
Authority is per-surface — the engine model and its TS mirror can each be right for their own surface and still disagree. Name the surface, then trust:
- Canvas render/node model → the Rust engine, now in the engine repo:
https://github.com/gridaco/nothing/blob/main/crates/grida/src/node/schema.rs.
The TS mirror
editor/grida-canvas/is authoritative for editor behavior and can lag the engine. - DB schema →
supabase/migrations/(applied, immutable);supabase/schemas/*.sqlis a readable projection that can lag — use the database skill. - Directory contract → the nearest
AGENTS.md/README.md. - "I remember API X…" → re-read current code; a memory is a claim about a past state, verify before acting.
Disagreement → decide which wins and why (git log -1 recency, what
the running entrypoint imports, what tests assert); don't average;
surface a material conflict to the user. Never authoritative even when
they match: docs/_history/,
docs/@designto-code/ (synced — truth is upstream), docs/cli/
(deprecated), .ref/.
Dead-tree traps
Some directories are git-tracked but dead — a bare rg from repo root
returns obsolete hits that look like confirmation: docs/_history/,
.ref/. (The legacy editor trees .legacy/ and packages/.legacy/ were
retired May 2026 in #759; recover from the
snapshot/legacy-with-2023-grida-code-editor-at-202505 branch.) rg already skips gitignored build dirs
(node_modules/, .next/, …); don't waste flags there.
Scope positively, or exclude the dead trees:
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 90 lines · 123 tokens per session scan A 871f0780544c
grounding is a skill published in the GitHub repository gridaco/grida (2,629 stars, last pushed 11d ago), licensed Apache-2.0. It adds 123 tokens to every session and 998 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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